| 中文摘要 | 第1-3页 |
| Abstract | 第3-4页 |
| 中文文摘 | 第4-8页 |
| Synopsis | 第8-16页 |
| Chapter One Introduction | 第16-22页 |
| ·Background of the study | 第16页 |
| ·An overview of NSECS | 第16-18页 |
| ·The concepts and structures of NSECS | 第16-17页 |
| ·The guiding functions of NSECS | 第17-18页 |
| ·The diversity of teaching materials under NSECS | 第18页 |
| ·PEP version vs BNUP version | 第18-19页 |
| ·Characteristics of two versions of textbooks | 第18-19页 |
| ·The significance of the textbooks evaluation | 第19页 |
| ·The status of lexicon in foreign language learning | 第19-20页 |
| ·Rationale for the research | 第20页 |
| ·Research questions | 第20-21页 |
| ·The outline of the thesis | 第21-22页 |
| Chapter Two Literature Review | 第22-34页 |
| ·Foreign research on word frequency | 第22-30页 |
| ·Studies on the efficacy of word cards/word lists | 第22页 |
| ·Studies on word frequency | 第22-26页 |
| ·The 2,000-word threshold | 第23页 |
| ·The 3,000-word threshold | 第23-26页 |
| ·Three general influential frequency lists | 第26-28页 |
| ·The British National Corpus | 第26页 |
| ·The Brown Corpus | 第26-27页 |
| ·The General Service List | 第27-28页 |
| ·Two influential academic word lists | 第28-29页 |
| ·The UWL | 第28页 |
| ·The AWL | 第28-29页 |
| ·Summary | 第29-30页 |
| ·Domestic research on word frequency | 第30-34页 |
| ·Review of papers from CNKI | 第30-31页 |
| ·Information from other sources | 第31-33页 |
| ·Summary and research questions | 第33-34页 |
| Chapter Three An Empirical Study | 第34-42页 |
| ·Research design | 第34-38页 |
| ·Nature of the design | 第34页 |
| ·Research materials | 第34-38页 |
| ·The word list of the NSECS | 第35页 |
| ·The word lists of the two text book versions | 第35-36页 |
| ·Word frequency lists | 第36-37页 |
| ·NMET specification manual | 第37-38页 |
| ·Data preparation and analysis | 第38-40页 |
| ·Setting up norms | 第38-40页 |
| ·Reasons for the incorporation of various frequency word lists | 第38-39页 |
| ·The primary vocabulary for Chinese senior students | 第39页 |
| ·The academic vocabulary for Chinese senior students | 第39-40页 |
| ·The basic vocabulary size for Chinese senior students | 第40页 |
| ·Statistical techniques | 第40页 |
| ·Data collection | 第40-42页 |
| Chapter Four Results for the Empirical Study | 第42-62页 |
| ·The primary and academic words for senior students | 第42-45页 |
| ·The primary vocabulary size for graduation level | 第43-44页 |
| ·The correlation of Level 1 and NL7, Level 2 and NL8 | 第44-45页 |
| ·Word frequency distribution characteristics of the NSECS | 第45-47页 |
| ·Quantitative results about NMET Specification Manual | 第47-51页 |
| ·Word frequency and vocabulary distribution | 第47-49页 |
| ·Lexical compatibility degree | 第49-51页 |
| ·Quantitative results about the lexical distribution | 第51-61页 |
| ·Vocabulary size, and words within and beyond the NSECS | 第52-54页 |
| ·A general lexical distribution of NL7 and NL8 in two versions | 第54-56页 |
| ·A word frequency distribution of two textbook versions | 第56-58页 |
| ·Words in NL7 and NL8 and high frequency counts | 第58-61页 |
| ·Summary | 第61-62页 |
| Chapter Five Conclusions | 第62-74页 |
| ·Major findings | 第62-65页 |
| ·The threshold vocabulary for the Chinese senior students | 第62-63页 |
| ·Rational high frequency vocabulary of the NSECS | 第63页 |
| ·The irrational situation caused by the NMET | 第63-64页 |
| ·Characteristics of lexical distribution of two textbook versions | 第64-65页 |
| ·Pedagogical implications | 第65-72页 |
| ·Understanding of compatibility | 第65-66页 |
| ·Solution to the reality of incompatibility | 第66-68页 |
| ·Development of test and evaluation | 第68-69页 |
| ·Improvement of teaching materials | 第69-70页 |
| ·Promotion of vocabulary instruction | 第70-72页 |
| ·Limitations and suggestions | 第72-74页 |
| References | 第74-79页 |
| Acknowledgements | 第79页 |
